﻿using System;

namespace Program20
{
    class Program
    {
        //
        static void Main(string[] args)
        {
            int[] arr = new int[] { 1, 2, 3, 4, 5, 6, 7, 8, 9, -10 ,-11,0};
            for (int i = 0; i < arr.Length; i++)
            {
                if (arr[i] > 0) 
                {
                    arr[i] += 1;
                }
                if (arr[i] < 0) 
                {
                    arr[i] -= 1;
                }
                Console.WriteLine(arr[i]);
            }

        }
    }
}
